Bukkit

What steps will reproduce the problem?
1. Write a negative value (-1000 for example)
2. limiter does not work
3. value goes even to -1000

What is the expected output? What do you see instead?
should be 0, got -1000 instead

What version of the product are you using?
0.8

Do you have an error log of what happened?
No error log available

Please provide any additional information below.
Make sure that the negative values are limited, and if possible, X and Z values to be able to be set bigger than 50.